202012218 has 96 divisors (see below), whose sum is σ = 484323840. Its totient is φ = 62927280.

The previous prime is 202012211. The next prime is 202012229. The reversal of 202012218 is 812210202.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 202012218.

It is not an unprimeable number, because it can be changed into a prime (202012211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1209571 + ... + 1209737.

It is an arithmetic number, because the mean of its divisors is an integer number (5045040).

Almost surely, 2^202012218 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 202012218, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (242161920).

202012218 is an abundant number, since it is smaller than the sum of its proper divisors (282311622).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

202012218 is a wasteful number, since it uses less digits than its factorization.

202012218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 334 (or 322 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

The square root of 202012218 is about 14213.1002247926. The cubic root of 202012218 is about 586.7582604208.

The spelling of 202012218 in words is "two hundred two million, twelve thousand, two hundred eighteen".